Pump water-closet



(No Model.)

W. BISHOP.

PUMP WATER CLOSET. No. 378,353. Patented Feb. 21, 1888.

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WILLIAM BISHOP, OF BROOKLYDl', NElV YORK.

PUMP WATER-CLOSET.

SPECIFICATION forming part of Letters Patent No. 378,353, dated February 21, 1888.

Application filed July 18, 1887. Serial No. 244,604. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM BISHOP, of Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Pump ater-Closets, of which the following is a specification.

My invention relates to that class of watercloscts, usually called marine or pump water-closets, used on board ship, in which a suction-pump withdraws the contents of the bowl and discharges it into the sea, while a second pump connected with a water-supply injects water to flush the bowl, both pumps be ing operated by the same hand-lever mounted alongside the seat of the closet.

In some closets of this class the soil-pump and the water-pump are combined in one cylinder and piston, the part below the piston serving as the soil-pump, while the part above the piston acts as the water-pump, so that an upstroke of the piston will withdraw the contents from thebowl and inject a flush of water into the bowl, while the downstroke discharges the soil into the sea while a fresh charge of water is drawn into the top of the cylinder. While this construction has some advantage in embodying the two pumps in one cylinder and piston, yet the plan has a disadvantagein not enabling the bowl to be pumped out in case it becomes flooded by a leakage from the sea, for while every stroke of the pump will withdraw some of the contents of the bowl it will also inject'water therein, and thus prevent the bowl from being quickly emptied when once flooded.

In another plan of construction to which my invention belongs-such as shown in my former patents, No. 289,210, of November 27, 18b3, and No. 295,036, of J one 18, l878-a separate soil-pump and water-pump are used, the water-pump being much smaller than the soilpump, but both operated by the same hand-lever. ln case the bowl becomes flooded in this form ofeloset it may be readily pumped out by disconnecting the water-pump from the hand-lever, allowing the soil-pu mp alone to act.

In my former closets the idle air-chamber in the top of the soilpump above the piston was connected by an air-vent pipe with the bowl, so as to vent the cylinder at the top and allow freedom of motion to its piston,while the dischargepipe of the water-pump connected directly to the bowl. Now, in my present improvement I employ the same pipe connecting the bowl V with the top of the soil-pump; but in addition I connect the dischargepipe of the waterpump directly to the upper chamber of the soil-pump, so that the water-pump first dis charges its water into the soil-pump above the piston, and from thence it flows into the bowl through the air-pipe connecting the soilpump and bowl. In this way the water keeps the top of the soil-pump cleansed and its piston better lubricated and sealed, and besides this the volume of air drawn in and ejected from the upper part of the soil-pump by the motion of the piston flows intermittently with the Water from the water-pump through the vent-pipe, so that the water is thus injected into the bowl with much greater energy, due to the elastic projecting effect of the air, so that the water is ejected and distributed in the bowl with a much better flushing and cleansing effeet that when it is ejected quietly directly from the water-pump.

My present invention therefore consists in the feature above explained, as hereinater fully set forth and claimed.

The figure in the an nexed drawing presents a sectional elevation of my improved marine closet.

In the drawing, a indicates thebowl or basin of the closet; I), the soil-pump cylinder; 0, the piston thereof; d, the cylinder of the Waterpump, and e the piston thereof. f is the pipe which connects the base of the bowl with the base of the soil-pump, opening into the side of the soil-pump, as shown, and is provided with a suction-valve, g, which opens toward or into the pump and closes in the reverse direction, as usual. h is the discharge-pipe, which opens from the base of the soil-pump and discharges into the sea through the side of the ship, as usual, having an outwardlyopening check-valve at a", in the ordinary way. It is a water-supply pipe which leads from a supply of water to the bottom of the waterpump d, and Z is an inwardly-opening or suction valve in the bottom of the pump. at is an outwardly or upwardly opening valve in the piston of the wat-enpump, all of the usual character.

The soil-piston c is solid or without valves,

as usual, but is provided with the usual packing to insure a tight fit in the cylinder, as illustrated. The piston-rods of both pumps pass through stuffing-boxesin the tops of their cylinders, and connect, as usual, to an operating hand-lever, n, the fulcrum end of which is pivoted to the upperend of an uprightlink, o, the lower end of which isjointed to a lug on the rim of the bowl, as illustrated.

1' indicates the water-discharge pipe of the water-pump.

The soil-pump, as will be noted, is much larger than the water-pump; but the stroke of the water-pump is greater, as it is connected with the pumping-levern at a longer distance from the fulcrum; but the displacement of the soil-pump is greater than that of the waterpump, so that the soil-pump can always withdraw the contents of the bowl faster than the water-pump could fill the same, as is usual in these closets, as will be understood. Now, the air-tight chamber in the top of the soil-pump above the piston is connected by the ventpipe 1) with the top of the bowl to, said ventpipe opening into the bowl tangentially, in the usual way in which water-flushing pipes open into water-closet bowls, as is illustrated and will be understood. This pipe thus allows an air-vent to the top of the soil-pump to allow the piston to work freely without being airbound, as will be readily comprehended, as.

set forth in my former patent, No. 289,210 5 but this pipe in my present invention also serves the additional function of a flushing-pipe, as through it also the water is discharged to flush the bowl, for it will be noted that the water-discharge pipe 0' of the pump, instead of being connected directly wit-h the bowl, as heretofore, connects to the top of the soilpump into the same air space or chamber into which the ventpipe 19 opens. Consequently, when the pumps are operated by movement of the hand-lever, the soil and water will be withdrawn from the bowl by the movements of the soil-piston, while clean water will be discharged by the water-pump into the top of the soil-pump, from whence it window with the air displaced by the upstroke of the soilpump through the pipe 19 with energetic spurts into the bowl, thus cleansing and flushing the same effectually. The water being thus discharged first into the soil-pump will keep the same cleansed and its sides wet and lubricated, and willact as a water seal and packing on the piston, insuring an easier and tighter action of the piston and rendering the packing more durable, besides preventing the formation of any dry or incrusted deposits, as are likely to form with the previous construction. The soil-pump, being thus kept clean by the charged with the water and being partly cornpressed in bubbles or masses between masses of water in the pipe p,will cause the water to be ejected with much greater force in the bowl and in a manner which is much more effective for cleansing the bowl than would be a smooth solid stream of water discharged directly from the Water-pump, as heretofore.

It will be noted that in case the bowl should ever become flooded by leakage through the check-valves from the sea it can be readily pumped out by detaching the piston-rod of the water-pump from the pump-lever and operating the soil-pump alone until the bowl is emptied, when the water-pump can be connected as before.

It will be noted that the upper part of the soil-pump, into which the water-pipe 1' discharges, is practically an air-pump, and that this air-pump discharges its jets of air, to gether with water supplied from the waterpump,through the pipe 12 into the bowl, which is, in fact, a new mode of flushing and cleansing a closet.

What I claim is l. The combination, with a water closet bowl, of an air-pump and a water-pump, the water-pump being arranged to discharge into the air-pump, while the air-pump discharges into the bowl, substantially as herein shown and described.

2. The combination, in apump watercloset, with the bowl and separate soil and water pumps, of a water-discharge pipe or duct extendingfrom the water-pump to theidle-chamber of the soil-pump cylinder above the piston thereof, and a second pipe or duct extending from said chamber to the bowl, substantially as and for the purpose set forth.

3. An improved marine closet, formed by the combination of the bowl to, pumps 0 b and d e at Z, having open connection with each other and with the bowl, operating device a, operating said pumps, pipes fh, leading from the bowl to the pump 0 b, and from thence to the discharge-outlet, and the pipes 1' andp, connecting the pumps and the bowl, respectively, substantially as set forth.

WILLIAM BISHOP.

Witnesses:

JNo. E. GAVIN, CHAS. M. HIGGINS.

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